/*
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
 *    PMMLUtils.java
 *    Copyright (C) 2008-2012 University of Waikato, Hamilton, New Zealand
 *
 */

package weka.core.pmml;

/**
 * Utility routines.
 * 
 * @author Mark Hall (mhall{[at]}pentaho{[dot]}com)
 * @version $Revision$
 */
public class PMMLUtils {

    /**
     * Utility method to left or right pad strings with arbitrary characters.
     * 
     * @param source  the source string
     * @param padChar the character to pad with
     * @param length  the length of the resulting string
     * @param leftPad pad to the left instead of the right
     * @return a padded string
     */
    public static String pad(String source, String padChar, int length, boolean leftPad) {
        StringBuffer temp = new StringBuffer();

        if (leftPad) {
            for (int i = 0; i < length; i++) {
                temp.append(padChar);
            }
            temp.append(source);
        } else {
            temp.append(source);
            for (int i = 0; i < length; i++) {
                temp.append(padChar);
            }
        }
        return temp.toString();
    }
}
